While working with Linux systems to run scripts or applications, you may encounter an error like this: ‘environment variable not set.’ Environment variables are ...

The environment variable is a pair of keys and values stored within the system and can be accessed by an application from the shell or sub-shell. You can set environmental variables for your programs, ...

Now that you know what are environment variables, let’s see how to view the environment variables stored in the Linux system. Viewing environment variables present in your Linux system is easy, and ...

Global variables or environment variables are variables available for any process or application running in the same environment. Global variables are being transferred from parent process to child ...

There I was, trying to come up with a topic for this column, when I did what I usually do when stumped: I sent a question out to my Twitter followers. This time, I got a great answer, from John ...

The eval command allows you to run the contents of variables as commands and can be very useful, especially in scripts. There are probably a lot of Linux users who have never encountered the eval ...

Abstract: In these days, Linux system is widely used because of its freedom to use and develop. With this trend, to find vulnerabilities in Linux kernel has become ...